Daewoo NC-8011 Service Manual page 15

Trouble Shooting Guide
1
SMPS&AMP Section
3
AC cord in
3
4
Power ON/OFF ON
5
6
LCD Display and back
light
7
8
Tuner/AUX/CD/USB Speaker
9
Phones sound
(only NC-8015/8016DE Model)
Yes
no
Yes
no
Yes
no
sound
Yes
no
1.Check F901
2.Check PT901
3.Check CN902 of 6pin:5V
4.Check CN902 of 7pin:(main power on)
5.Check IC911 of 3pin:9V.
6.Check IC704 of 2pin:3.3V
7.Check IC701 of 22pin:3.3V
1.Check LC701
2.Check IC701
3.Check X701(32.768KHZ)
4.Check LD701 and LD702
1.Check PT902
2.Check IC800(TDA7498):
Voltage of 6pin and 13pin :30.5V(NC-8015DE)/
37.5V(NC-8016DE)
3.Check IC800(TDA7498):Voltage of 20pin and
21pin :3.3V
4.Check IC801(SA1117BH-3.3):Voltage of
2pin :3.3V
5.Check IC400(SC7314S):
Voltage of 1pin: normal DC(8.5V).
6.Check TUNER/AUX/CD input signal
7.Check output signal pin of IC800(TDA7498)
2/3pin, 8/9pin and 10/11pin,16/17pin.
8.Check output signal terminals(J800).
1.Check J701
2.Check IC702(IL4560D)
3.Check CN700
1
3
3
4
5
6
7
8
9